/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hylanda.processors.HNGetH2x;

import java.io.BufferedOutputStream;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.nifi.annotation.behavior.ReadsAttribute;
import org.apache.nifi.annotation.behavior.ReadsAttributes;
import org.apache.nifi.annotation.behavior.WritesAttribute;
import org.apache.nifi.annotation.behavior.WritesAttributes;
import org.apache.nifi.annotation.documentation.CapabilityDescription;
import org.apache.nifi.annotation.documentation.SeeAlso;
import org.apache.nifi.annotation.documentation.Tags;
import org.apache.nifi.annotation.lifecycle.OnScheduled;
import org.apache.nifi.components.PropertyDescriptor;
import org.apache.nifi.flowfile.FlowFile;
import org.apache.nifi.flowfile.attributes.CoreAttributes;
import org.apache.nifi.logging.ComponentLog;
import org.apache.nifi.processor.AbstractProcessor;
import org.apache.nifi.processor.ProcessContext;
import org.apache.nifi.processor.ProcessSession;
import org.apache.nifi.processor.ProcessorInitializationContext;
import org.apache.nifi.processor.Relationship;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.processor.util.StandardValidators;

import com.alibaba.fastjson.JSONObject;
import com.hylanda.processors.HNGetH2x.util.GenUrlCrc64;
import com.hylanda.processors.HNGetH2x.util.H2xUtil;
import com.hylanda.processors.HNGetH2x.util.NifiUtil;
import com.hylanda.processors.HNGetH2x.util.URLHelper;
import com.hylanda.processors.HNGetH2x.util.XMLUtil;

@Tags({ "h2x,xml" })
@CapabilityDescription("h2x")
@SeeAlso({})
@ReadsAttributes({ @ReadsAttribute(attribute = "", description = "") })
@WritesAttributes({ @WritesAttribute(attribute = "", description = "") })
public class HNGetH2x extends AbstractProcessor {

	public static final PropertyDescriptor URL_FIELD = new PropertyDescriptor.Builder().name("URL_FIELD")
			.displayName("url所在的字段").required(true).addValidator(StandardValidators.NON_EMPTY_VALIDATOR).build();
	public static final Relationship SUCCESS = new Relationship.Builder().name("SUCCESS").description("SUCCESS")
			.build();
	public static final Relationship FAILURE = new Relationship.Builder().name("FAILURE").description("FAILURE")
			.build();

	private List<PropertyDescriptor> descriptors;

	private Set<Relationship> relationships;

	@Override
	protected void init(final ProcessorInitializationContext context) {
		final List<PropertyDescriptor> descriptors = new ArrayList<PropertyDescriptor>();

		descriptors.add(URL_FIELD);
		this.descriptors = Collections.unmodifiableList(descriptors);

		final Set<Relationship> relationships = new HashSet<Relationship>();
		relationships.add(SUCCESS);
		relationships.add(FAILURE);
		this.relationships = Collections.unmodifiableSet(relationships);
	}

	@Override
	public Set<Relationship> getRelationships() {
		return this.relationships;
	}

	@Override
	public final List<PropertyDescriptor> getSupportedPropertyDescriptors() {
		return descriptors;
	}

	@OnScheduled
	public void onScheduled(final ProcessContext context) {

	}

	@Override
	public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
		FlowFile flowFile = session.get();
		if (flowFile == null) {
			return;
		}
		// getLogger().info("sjx --------------enter h2x");
		long startTime = System.currentTimeMillis();

		String url_field = null;
		try {
			url_field = context.getProperty(URL_FIELD).getValue().trim();
		} catch (Exception e) {
			// TODO: handle exception
		}
		String content = NifiUtil.getContent(session, flowFile);

		ComponentLog log = getLogger();

		if (content == null) {
			log.info("content is null");
			session.transfer(flowFile, FAILURE);
			return;
		}
		// log.info("GetATags content :"+content);
		JSONObject jsonObject = JSONObject.parseObject(content);

		String url = jsonObject.getString(url_field);

		// getLogger().info("sjx --------------url"+url);
		if (url == null || url.trim().equals("")) {
			log.info("url is null");
			session.transfer(flowFile, FAILURE);
			return;
		}

		int count = 0;
		Pattern p = Pattern.compile("http");
		Matcher m = p.matcher(url);
		while (m.find()) {
			count++;
		}
		if (count > 1) {
			JSONObject jsonObject2 = new JSONObject();
			jsonObject2.put("url", url);
			jsonObject2.put("msg", "url异常");
			flowFile = session.write(flowFile, (in, out) -> {
				try (OutputStream outputStream = new BufferedOutputStream(out)) {
					// outputStream.write(IOUtils.toByteArray(resultJson.toJSONString()));
					outputStream.write(jsonObject2.toJSONString().getBytes(StandardCharsets.UTF_8));
				}
			});
			session.transfer(flowFile, FAILURE);
			return;
		}
		// getLogger().info("sjx url -------------------------"+url);
		String reg_url = URLHelper.regular(url);
		String strResult = null;
		try {
			strResult = H2xUtil.getContentString(reg_url);
		} catch (Exception e) {
			JSONObject jsonObject2 = new JSONObject();
			jsonObject2.put("url", url);
			jsonObject2.put("msg", "h2x解析异常");
			flowFile = session.write(flowFile, (in, out) -> {
				try (OutputStream outputStream = new BufferedOutputStream(out)) {
					// outputStream.write(IOUtils.toByteArray(resultJson.toJSONString()));
					outputStream.write(jsonObject2.toJSONString().getBytes(StandardCharsets.UTF_8));
				}
			});
			session.transfer(flowFile, FAILURE);
			return;
		}

		if (strResult == null || strResult.equals("")) {
			JSONObject jsonObject2 = new JSONObject();
			jsonObject2.put("url", url);
			flowFile = session.write(flowFile, (in, out) -> {
				try (OutputStream outputStream = new BufferedOutputStream(out)) {
					// outputStream.write(IOUtils.toByteArray(resultJson.toJSONString()));
					outputStream.write(jsonObject2.toJSONString().getBytes(StandardCharsets.UTF_8));
				}
			});
			session.transfer(flowFile, FAILURE);
			return;
		}
		// getLogger().info("sjx -------------- h2x strResult"+strResult);
		// getLogger().info("sjx----------------"+strResult);
		JSONObject resultJson = XMLUtil.getJson(strResult);// H2xUtil.getContent(reg_url);
		// getLogger().info("sjx -------------- h2x
		// jsonObject"+jsonObject.toJSONString());
		if (resultJson.containsKey("msg")) {
			resultJson.put("url", url);
			flowFile = session.write(flowFile, (in, out) -> {
				try (OutputStream outputStream = new BufferedOutputStream(out)) {
					// outputStream.write(IOUtils.toByteArray(resultJson.toJSONString()));
					outputStream.write(resultJson.toJSONString().getBytes(StandardCharsets.UTF_8));
				}
			});
			session.transfer(flowFile, FAILURE);
			return;
		}

		// getLogger().info("sjx json -------------"+resultJson.toJSONString());
		long endTime = System.currentTimeMillis();

		resultJson.put("elapsedTime", endTime - startTime);

		flowFile = session.write(flowFile, (in, out) -> {
			try (OutputStream outputStream = new BufferedOutputStream(out)) {
				// outputStream.write(IOUtils.toByteArray(resultJson.toJSONString()));
				outputStream.write(resultJson.toJSONString().getBytes(StandardCharsets.UTF_8));
			}
		});
		String session_id = flowFile.getAttribute(CoreAttributes.UUID.key());

		String uuid = GenUrlCrc64.GenCrc64(UUID.randomUUID().toString());
		// String session_id = flowFile.getAttribute(CoreAttributes.UUID.key());
		String instance_id = getIdentifier();
		JSONObject logJSON = new JSONObject();
		JSONObject msgJSON = new JSONObject();

		Date date = new Date();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String time = sdf.format(date);
		msgJSON.put("time", time);
		msgJSON.put("status", "success");

		logJSON.put("msg", msgJSON);
		logJSON.put("session_id", session_id);
		logJSON.put("uuid", uuid);
		logJSON.put("instance_id", instance_id);
		getLogger().billing(session_id);
		getLogger().info(logJSON.toJSONString());
		session.transfer(flowFile, SUCCESS);

	}

}
